{"product_id":"sandsteel-mainspring-for-elgin-12s-no-1720-steel","title":"Sandsteel Mainspring for Elgin 12s No. 1720 - Steel","description":"\u003cp\u003e\u003cstrong\u003eSandsteel \u003c\/strong\u003eMainspring for \u003cstrong\u003eElgin\u003c\/strong\u003e 12s Movements, Factory No. 1720, steel, new in frail envelope. See images for precise mainspring specifications and further details. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.\u003c\/p\u003e","brand":"Sandsteel","offers":[{"title":"Default Title","offer_id":48871593967924,"sku":"PMA-SAND1720S-08","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2025-08-2215.25.52.jpg?v=1755901696","url":"https:\/\/www.vintagetimeparts.com\/products\/sandsteel-mainspring-for-elgin-12s-no-1720-steel","provider":"Vintage Time Parts","version":"1.0","type":"link"}